一般情况调用phpqrcode第三方插件 会把生成的二维码图片保存到服务器，不保存服务器也会以header头的形式输出到浏览器，（我们不允许把图片文件保存的liunx服务器，只能保存到阿里云OSS存储服务器 不符合我的逻辑）所有经过我的日思夜想，于是想出来的实现方式 。我可不可以跟爬虫一样先把这个图片文件资源先获取到，然后直接在后端上传oss
createQrcode 生成二维码方法
public function createQrcode(){
if(!$_POST['str']) return false;
$str = $_POST['str'];
require_once ROOT.'cube/action/phpqrcode/phpqrcode/qrlib.php'; //包含类文件
$QRcode = new QRcode();
//允许的错误级别
$errorCorrectionLevel = 'L';
if (isset($level) && in_array($level, array('L','M','Q','H')))
$errorCorrectionLevel = $level;
//二维码大小
$matrixPointSize = 4;
if (isset($_POST['size'])){
$size = $_POST['size'];
$matrixPointSize = min(max((int)$size, 1), 10);
}
if (isset($str)) {
$QRcode->png($str, false, $errorCorrectionLevel, $matrixPointSize);
}else{
return "ERRORDATA";
}
}
uploadqrcode 获取二维码上传OSS
public function uploadqrcode(){
//生成而我加密字符串
$str = 'orderid=111'; // 被加密信息
$key = 'resss'; // 密钥
$strs = A('strlib/basic/encrypt',array($str, $key));//加密后的字符串
$name = date('Y-m-d').A('strlib/basic/randstr',array(6,3));
/*
//模拟get请求
$data = array(
'name'=>'zhezhao',
'age'=>'23'
);
$query = http_build_query($data);
$url = 'http://localhost/get.php';//这里一定要写完整的服务页面地址，否则php程序不会运行
$result = file_get_contents($url.'?'.$query);
*/
//这里为了安全性我选择post请求
$data = array(
'str'=>$strs
);
$query = http_build_query($data);
$options['http'] = array(
'timeout'=>60,
'method' => 'POST',
'header' => 'Content-type:application/x-www-form-urlencoded',
'content' => $query
);
$url = 'http://'.$_SERVER['HTTP_HOST'].'/index.php/order/lineOrder/createQrcode';
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
A('oss/object/putObject',array('bucket',$_SERVER['HTTP_HOST'].'/lineorder/qrcode/'.$name.'.png',$result));
}
这里遇到一个问题就是我需要把二维码的参数传递个createQrcode 所有想到用模拟表单
另附字符串加密方法 （可逆向解密）
//加密
public function encrypt($data, $key)
{
$key = md5($key);
$x = 0;
$len = strlen($data);
$l = strlen($key);
$char = $str = '';
for ($i = 0; $i < $len; $i++)
{
if ($x == $l)
{
$x = 0;
}
$char .= $key{$x};
$x++;
}
for ($i = 0; $i < $len; $i++)
{
$str .= chr(ord($data{$i}) + (ord($char{$i})) % 256);
}
return base64_encode($str);
}
//解密
public function decrypt($data, $key)
{
$key = md5($key);
$x = 0;
$data = base64_decode($data);
$len = strlen($data);
$l = strlen($key);
$char = $str = '';
for ($i = 0; $i < $len; $i++)
{
if ($x == $l)
{
$x = 0;
}
$char .= substr($key, $x, 1);
$x++;
}
for ($i = 0; $i < $len; $i++)
{
if (ord(substr($data, $i, 1)) < ord(substr($char, $i, 1)))
{
$str .= chr((ord(substr($data, $i, 1)) + 256) - ord(substr($char, $i, 1)));
}
else
{
$str .= chr(ord(substr($data, $i, 1)) - ord(substr($char, $i, 1)));
}
}
return $str;
}
生成随机字符串
// 数值型字符串，代号 1
private $cs1 = array('0','1','2','3','4','5','6','7','8','9');
// 纯小写字符串，代号 2
private $cs2 = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');
// 多类型字符串，代号 3
private $cs3 = array
(
'0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
);
public function randstr($len,$type=1)
{
if( $len<1 ) return false;
$RET = '';
switch( $type )
{
case 1:
$RET = $RET.$this->randcs1(false);
for( $i=2; $i<=$len; $i++ ) $RET = $RET.$this->randcs1();
return $RET;
case 2:
for( $i=1; $i<=$len; $i++ ) $RET = $RET.$this->cs2[rand(0,25)];
return $RET;
case 3:
$RET = $RET.$this->randcs3(false);
for( $i=2; $i<=$len; $i++ ) $RET = $RET.$this->randcs3();
return $RET;
default:
return false;
}
}
private function randcs1($zero=true)
{
$from = 1;
if( $zero ) $from = 0;
return $this->cs1[rand($from,9)];
}
private function randcs3($zero=true)
{
$from = 1;
if( $zero ) $from = 0;
return $this->cs3[rand($from,61)];
}